Needle Bearings On The End of the Spring?

[Shed tuner]

I did try it, and it does "work", but I couldn't detect any advantage over just a couple of hard steel slip washers and a dab of moly... on the downside however, their physical constraint mean they are tricky to fit to many smaller clylinder bore guns, plus there are the concerns about long term reliability.

[NickG]

And spring room .

[Rikard]

Airmasters were fitting these in the 1980’s, I have a few of their tuned HW77’s rifles with them fitted

[Dornfelderliebe]

How would a ptfe washer sandwiched between two steel washers fare?

[gtfreight]

I've just bought a txsr with one of these bearings fitted between the rear guide and the trigger block. It does shoot very well. Would it be advisable to remove it?

[joffy]

I've just bought a txsr with one of these bearings fitted between the rear guide and the trigger block. It does shoot very well. Would it be advisable to remove it?

Trigger block is alloy so will wear in no time

[gtfreight]

Trigger block is alloy so will wear in no time

Thank you, I will remove it before I use the gun again.

[Born Again]

How would a ptfe washer sandwiched between two steel washers fare?

You'd be better with two PTFE washers between two steel washers. The coefficient of friction of PTFE on PTFE is similar to ice on ice.

[Dornfelderliebe]

You'd be better with two PTFE washers between two steel washers. The coefficient of friction of PTFE on PTFE is similar to ice on ice.

Thanks. I shall now try to find some on my favourite auction site. I'm sure that the ptfe will be protected by the steel.

[NickG]

PTFE deforms and migrated , so you will probably see velocity varying , delrin is probably better.
Your piston rotates in the tx anyhow, just make sure your piston weight/ top hat isn't stuck and grease it .

[Shed tuner]

And spring room .

true....